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Finding the Fourth Proportional to 20,447.57, 30,640.92 and 10,573.67

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Solution

The fourth proportional to 20,447.57, 30,640.92 and 10,573.67 is: 15,844.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.57 : 30,640.92 = 10,573.67 : x
  2. Step 2: Convert to fraction form
    20,447.57/30,640.92 = 10,573.67/x
  3. Step 3: Cross multiply
    20,447.57x = 30,640.92 × 10,573.67
  4. Step 4: Simplify right side
    20,447.57x = 323,986,976.58
  5. Step 5: Solve for x
    x = 323,986,976.58/20,447.57
  6. Step 6: Final answer
    x = 15,844.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.